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CVE-2026-111678

3.3 · LOW

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded.

Published Oct 16, 2026antiword_projectCWE-125EPSS 0.22%

Overview

CVE-2026-111678 is a low-severity vulnerability affecting antiword_project antiword. It was published on October 16, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded. Attackers can supply a crafted .doc file with malicious FKP pages to read past the 512-byte stack buffer, crashing antiword or corrupting style parsing.

Remediation

Check the references section for vendor advisories and patches from antiword_project. Update antiword to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
antiword_projectantiword0Affected

References

GitHubgithub.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474GitHubgithub.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L997-L1022Refhackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-readRefwww.vulncheck.com/advisories/antiword-through-0.37-stack-out-of-bounds-read-via-prop8-c-fkp-parsingRefhackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read

How CyberStrike helps

Frequently asked questions

What is CVE-2026-111678?

CVE-2026-111678 is a low-severity vulnerability affecting antiword_project antiword. It was published on October 16, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2026-111678?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-111678?

Check the references section for vendor advisories and patches from antiword_project. Update antiword to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-111678?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-111678 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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